Gravesande Ring and Ball, 19mm Ball Science at Home and mechanical-advantage experiments (stand base

and mechanical-advantage experiments (stand base and support clamp sold separately)

Demonstrates the polarity-sensitive forward-bias behavior of a light-emitting diode on a base with two 4mm terminals

providing a stable heating platform for introductory chemistry and general science classroom work

safely grounding accumulated static charge during high-voltage demonstration work

Gravesande Ring and Ball, 19mm Ball Science at Home and mechanical-advantage experiments (stand baseFlame heated thermal expansion demonstrator with a 19mm metal ball dropping through a matched ring when cool, no longer fitting once heating expands its diameter.